Surface cleaner base



FIG. 1 is a front, right perspective view of a surface cleaner base showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view thereof.

The detail shown in broken lines in FIG. 3 forms no part of the claimed design. 

CLAIM The ornamental design for a surface cleaner base, as shown and described. 